diff --git a/include/emulator.h b/include/emulator.h
index 71b7c240..5cd894bc 100644
--- a/include/emulator.h
+++ b/include/emulator.h
@@ -36,6 +36,18 @@ extern "C" {
 #define OFONO_EMULATOR_IND_SERVICE "service"
 #define OFONO_EMULATOR_IND_SIGNAL "signal"
 
+#define OFONO_EMULATOR_CALL_INACTIVE 0
+#define OFONO_EMULATOR_CALL_ACTIVE 1
+
+#define OFONO_EMULATOR_CALLSETUP_INACTIVE 0
+#define OFONO_EMULATOR_CALLSETUP_INCOMING 1
+#define OFONO_EMULATOR_CALLSETUP_OUTGOING 2
+#define OFONO_EMULATOR_CALLSETUP_ALERTING 3
+
+#define OFONO_EMULATOR_CALLHELD_NONE 0
+#define OFONO_EMULATOR_CALLHELD_MULTIPLE 1
+#define OFONO_EMULATOR_CALLHELD_ON_HOLD 2
+
 struct ofono_emulator;
 struct ofono_emulator_request;